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which fuel pump for aux. heater
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aixede
 


Member Since: 22 Nov 2018
Location: Aachen
Posts: 66

Germany 2013 Discovery 4 3.0 TDV6 S Auto Santorini BlackDiscovery 4
which fuel pump for aux. heater

Surprised by Diesel dripping nicely out of the heater exhaust, I need obviously a new fuel pump for the Censored heater.
Which type do I need, looks I need the one with a fuel cut off valve ?
There are some "copies" available, any experience with those ?

greetings from one of the rare corona free areas near Aachen Razz [/i]
  
Post #21783826th Oct 2020 6:08 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Hi

Don’t know if it helps but did u know there’s a fuel line connector for the FBH tucked away, where the circle is , found that mine was also leaking and dropped down

Just a thought just in case it may be that, if it is, u have to prise the end covers off the coupling to push the ends in , one side is plastic pipe the other is metal , I used a tube cutter so didn’t get any fragments inside the fuel line

Hope that may helps





   
Post #21783876th Oct 2020 6:19 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Plus think this is the fuel pump part number for the FBH

U might want to sit down first Big Cry

JEX500020

Wonder if this may work ???

https://www.ebay.co.uk/itm/WEBASTO-FUEL-PU...SwGMVfdXrM
  

Last edited by gstuart on 6th Oct 2020 6:39 pm. Edited 1 time in total 
Post #21783886th Oct 2020 6:26 pm
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aixede
 


Member Since: 22 Nov 2018
Location: Aachen
Posts: 66

Germany 2013 Discovery 4 3.0 TDV6 S Auto Santorini BlackDiscovery 4

Hi,
in my case the heater was flooded and the fuel running out of the heater exhaust, when the vehicle
was parked in the garage Crying or Very sad

Looks like the shut off valve gave up.
As far as I understand, this valve is part of the pump?

I found that there are heaters which have the valve integrated, but the version
used in Disco 3 has the valve in the pump ?
The pump is defect anyway and needs to be changed.
  
Post #21783926th Oct 2020 6:37 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Ah i see, was worth a shot

Posted part number and wondering if it would be cheaper from webasto them selves , as from LR it looks around £230

Hope that may help
  

Last edited by gstuart on 6th Oct 2020 9:00 pm. Edited 2 times in total 
Post #21783956th Oct 2020 6:42 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

There’s also this guide

https://www.disco3.co.uk/wiki/Fuel_Burning_Heater
   
Post #21783966th Oct 2020 6:43 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Also just found this from Germany , alas not 100% if it’s correct

https://www.ebay.co.uk/itm/Webasto-DP41-Fu...Swd4tUBYXY
   
Post #21783976th Oct 2020 6:45 pm
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Martin
Site Admin and Owner 


Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18440

United Kingdom 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

From what you’ve said your pump is unlikely to be at fault as it is supplying diesel which is it’s only job. It isn’t a pump which in the traditional sense of pumping through fuel continuously when a voltage is applied, it’s a “dosing pump” which supplies a slug of fuel through when the heater applies a voltage pulse.

Under normal operation the heater generates a certain number of pulses per minute to supply a certain amount of fuel.

More likely you have an issue with the heater itself with it not igniting the fuel that is being supplied.
 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know! 
 
Post #21784016th Oct 2020 6:55 pm
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aixede
 


Member Since: 22 Nov 2018
Location: Aachen
Posts: 66

Germany 2013 Discovery 4 3.0 TDV6 S Auto Santorini BlackDiscovery 4

The heater was flooded, when vehicle parked in the garage
and all shut off. Fuel flow should be stopped by the pump, but there is fuel arriving at the heater, something wrong obviously.
The valve is part of the pump as I found out.
Question now: DP 40 or DP 41.
  
Post #21784236th Oct 2020 8:15 pm
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Motolab
 


Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815

Netherlands 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Martin is right...

There is no fuel flow if the pump is off... the pump sucks itself and has to suck first before it can pump....
It can only suck if it is running through the webasto sofware from the heater..

As the pump sits higher than the fuel level in the tank...and the heater unit even higher it is almost impossible that is “leaks” when the heater is off... the pump can only run if the heater tells it to run, and gives only that command when it is gone through the start up sequence ...

But if you like to spend your money on a pump, be my guest...

Dp41 is the right one..

I fitted hunderds of them, sold thousands....

I put my money on another part on/in your webasto heater...

Get it diagnosed with webasto software
 Best regards
Harold

Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year

Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc. Wink 
 
Post #21784376th Oct 2020 8:48 pm
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aixede
 


Member Since: 22 Nov 2018
Location: Aachen
Posts: 66

Germany 2013 Discovery 4 3.0 TDV6 S Auto Santorini BlackDiscovery 4

I checked the pump with the WTT software,
it shows no faults but the pump is definitively not working.

If I take off the hose from the heater, ignition etc. off,
my heater has no extension to standheater function,
I have a constant fuel dripping out of the hose 🥴

These were the indications for me, that the pump gave
up and the plunger is potentially blocked in a position,
that the fuel line stays open.

Looks like there is a little bit bit of pressure in the tank...🙆

I blocked the fuel hose as intermediate solution.
Thx for info, that I need dp41.
  
Post #21785037th Oct 2020 7:44 am
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Huge Halford
 


Member Since: 30 May 2013
Location: West Midlands
Posts: 274

England 2005 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

Hi guys
Where is this pump located ????
 Mods:-
Beanie Grill,Side Steps,Colour-coded wheel arches, Door handles and Bumpers,Rear Bumper Exhaust Trim,Remote Start FBH,2014 D4 rear lights,Reversing camera GVIF enabled,D4 Bluetooth Module, Puddle lighted wing mirrors

To do list:-
Waxoyl the Underside. 
 
Post #21850036th Nov 2020 5:14 pm
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